Plastic composition



Patented June 17, 1924..

STATES PATENT orrics.

nrmrmma n. GREENE, onronr ARTHUR, .rnxas, assmnon T sum was 00!- ram, or NEW YORK, 1w. at, a conrona'rron or rms.

PLASTIC COMPOSITION.

Ho Drawing.

To all whom it may concern:

Be it known that I, DELrHINn D. GREENE,

a citizen of the United States, and residing in Port Arthur, county of Jefferson, 5 and State of Texas, have invented certain new and useful Improvements in Plastic Compositions, of which the following is a specification.

This invention relates to compositions insoluble in oil and has special reference to the preparation of a material capable of resisting the action of hydrocarbon vapors and gases under .high temperatures and pressures. 7

It is an object of the invention to provide a packing material which is adapted to be placed in ,the threads and joints of pipes and connections of stills, retorts, and other apparatus in which hydrocarbon oils are being treated.

It is a further object of the invention to provide a packing material that is capable of being readily applied and which will set quickly.

Other objects as well as the articular ad'- vantages to be derived from t e use of my invention will appear from the following detailed description thereof.

In accordance with my invention a mixtur of alcohol, shellac, rosin, gypsum, and iron oxid is prepared. the proportions of ingredients varying somewhat with the ar-- ticular purpose for which the compo nd may be intended.

s a specific example of the invention 1 may state that a mixture suitable for packing material in the joints of stills and pipes employed for the treatment of hydrocarbon 0115 under high pressures and tern- 40 peratures may be prepared consisting of the following ingredients:

75' lbs. denatured alcohol, 75 lbs. orange shellac, lbs; crushed lump rosin,

5 lbs. gypsum, 37 lbs. ferric oxid.

In the preferred manner 'of pre aring this com osition the alcohol is place in a mixing ettle provided with a mechanical stirrer and the shellac and n are added gradually while the contents of the kettle Application filed April: is, 1921;, Serial in. 482,596.

are kept in agitation. No heating is ordinarily required. After mixing the compoproper consistency is obtained. -The result ing mixtureis in a. plastic state and upon applymg to the joints and threads of pipes qulckly sets and forms a seal preventing the-escape'of vapors or gases even under the most intense temperatures and the highest pressures used in the treatment of hydrocarbon oils.

In addition to forming an excellent pack-- ing material the compound of my invention .is adapted for use as an anti-rust coating for pipes and other metal ware. It is onlynecessary to add additional quantities of alcohol or other suitable thinner to render the composition suitable for painting purposes. If desired coloring materials may be added to the mixture in order to prepare a coatingcompound of suitable color.

It is understood that variations may he made from the particular roportions of ingradients given in" the specific example of the invention and-that the proportions will vary somewhat with the particular purpose for which the compound is intended. A sealing compound for pressure still appara tus will, however, generally contain approximately 33% by weight alcohol. 30% shellac, 20% rosin, 2% gypsum, and 15% ferric oxid.

What I claim is 2- 1. A plastic compositioncomposed of a mixture of approximately 33% by weight alcohol. 30% shellac, 20% resin, 2% and 15% iron oxid;

2. A plastic u'tion comp of alcohol. shellac, gypsum, and iron oxid mixed to form a plastic mass which gelgiliily hardens when exposed to the air in s. In witnem whereof I have here set my hand this 12thdayof April 1921.

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